Updated BLE troubleshooting guide to reference setup wizard settings

Author: XiTatiON

docs/EN/GettingHelp/BluetoothTroubleshooting.md

@@ -15,6 +15,18 @@ Some of these issues likely apply to other Bluetooth Insulin pumps too, the Medt
 
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+(bluetoothtroubleshooting-bluetooth-battery-optimisation)=
+
+## Bluetooth Battery Optimisation
+
+Newer versions of Android have enable Battery optimisation for the system Bluetooth app. This is known to cause some issues for Bluetooth pumps and CGMs.
+
+If you followed the [Setup Wizard](../SettingUpAaps/SetupWizard) and followed the configuration settings in the [Bluetooth Battery Optimisation](setup-wizard-bluetooth-battery-optimisation) section then this setting should be correct, however if you followed an older version of this guide its possible you have not changed this setting.
+
+Verify this is correctly configured if you have pump an CGM disconnections.
+
+---
+
 (bluetoothtroubleshooting-apps-using-nearby-device-permission)=
 
 ## Apps that use the "Nearby devices" Android permission can cause connection drops and Pod activation problems